Suitable for clutch center sizes: From 14.4 – 29mm (approx). Blow Mold Case Included. No Instruction or manual. A selection of sleeves: 11.75, 13.75, 14.75, 15.75, 16.75, 17.75, & 18.75mm. Includes 3 cone: 14.4 – 21mm, 19.25 – 25mm & Large cone: 24 – 29mm (approx).